.22 Marauder is the standard for quiet. The pellet impact is literally louder than the hammer, which is louder than the shot report. There may be some quieter guns that shoot under 500fps, but for something that has the accuracy and power to kill pests at 50yds, there probably isn't anything quieter.
yep. i have never heard one as quiet as my marauder. the R7 is quiet as far as non-shrouded airguns go.
